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<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  <div id="app"></div>
  <script src="./js/react.development.js"></script>
  <script src="./js/react-dom.development.js"></script>
  <script src="./js/babel.min.js"></script>
  <script type="text/babel">
    // 自定义语法2 class组件
    class XzRating extends React.Component{
        render(){ //重写父类提供的‘渲染方法’
          console.log(this.props);
          let stars=''
          for(let i=0;i<this.props.count;i++){
            stars+='♥'
          }
          let styleObj={color:this.props.color}
          return(
            <div style={styleObj}>{stars}</div>
          )
        }
    }
    
    let el=(
      <XzRating count={100} color='blue'/>
    )
    let app=document.getElementById('app')
    let root=ReactDOM.createRoot(app)
    root.render(el)
  </script>
</body>
</html>